diff --git a/library/version_features.c b/library/version_features.c
index 4f5bf13..a708673 100644
--- a/library/version_features.c
+++ b/library/version_features.c
@@ -264,6 +264,9 @@
 #if defined(MBEDTLS_AES_FEWER_TABLES)
     "MBEDTLS_AES_FEWER_TABLES",
 #endif /* MBEDTLS_AES_FEWER_TABLES */
+#if defined(MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH)
+    "MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH",
+#endif /* MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH */
 #if defined(MBEDTLS_CAMELLIA_SMALL_MEMORY)
     "MBEDTLS_CAMELLIA_SMALL_MEMORY",
 #endif /* MBEDTLS_CAMELLIA_SMALL_MEMORY */